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Author Topic: Boolean operation problem!  (Read 7752 times)

Bugtrooper

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Boolean operation problem!
« on: June 02, 2010, 08:37:50 pm »

Hello!
I've got some problem when using the union boolean operation. When I try to unify 2 mesh (a wall section and a sphere) I've got the error code 3# .....A concave face detected!....and I don't want to unify the 2 objects manually beacause it's really long work with the whole project. So can anyone give me some help?
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hihosilver

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Re: Boolean operation problem!
« Reply #1 on: June 03, 2010, 12:06:39 am »

Hm, that's an interesting problem.  One thing that I would make sure of is that both figures are fully closed, otherwise it wont work.
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Bugtrooper

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Re: Boolean operation problem!
« Reply #2 on: June 03, 2010, 11:56:12 am »

They are close, they are on contact.
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RudySchneider

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Re: Boolean operation problem!
« Reply #3 on: June 03, 2010, 03:09:51 pm »

hihosilver means "closed," as in solid meshes.  Boolean operations won't work on an open mesh.
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Bugtrooper

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Re: Boolean operation problem!
« Reply #4 on: June 03, 2010, 06:32:46 pm »

Okkay so I have to close.... ok thanks:D
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Bugtrooper

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Re: Boolean operation problem!
« Reply #5 on: June 04, 2010, 07:53:24 pm »

It not worked.... maybe I doing something wrong...
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Bugtrooper

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Re: Boolean operation problem!
« Reply #6 on: June 04, 2010, 07:55:24 pm »

If I post the project can anyone help?
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RudySchneider

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Re: Boolean operation problem!
« Reply #7 on: June 05, 2010, 01:24:57 am »

It couldn't hurt...
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Bugtrooper

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Re: Boolean operation problem!
« Reply #8 on: June 05, 2010, 06:00:05 am »

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kreator

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Re: Boolean operation problem!
« Reply #9 on: June 05, 2010, 06:48:33 am »

This operation will not work, as you are trying to do a union to a curved surface.

To complete the operation You need a flat surface do the union, then do a  bend modifier to that, to get your curve.

I think it pays to pre-think the model before getting too far into it, this model just needed  one section to be worked on to get it how you wanted, then you could have duplicated and attached each section.

If you don`t want to re-start, I`d just add half spheres at intervals then do a "Join Solids"

 
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O

Bugtrooper

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Re: Boolean operation problem!
« Reply #10 on: June 05, 2010, 09:24:20 am »

Thanks!
And by the way... I joined the tain project earlier on 3DVIA, and wanted to ask that can I help?
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kreator

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Re: Boolean operation problem!
« Reply #11 on: June 05, 2010, 01:28:04 pm »

Quote
joined the tain project earlier on 3DVIA, and wanted to ask that can I help?

whats your username on there?  Raizen31337 ??
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Bugtrooper

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Re: Boolean operation problem!
« Reply #12 on: June 05, 2010, 07:16:42 pm »

Yeah! :D
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JSmith_DumDumDumDumDum

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Re: Boolean operation problem!
« Reply #13 on: December 10, 2015, 11:13:42 pm »

This operation will not work, as you are trying to do a union to a curved surface.

To complete the operation You need a flat surface do the union, then do a  bend modifier to that, to get your curve.
 

I'm not too sure I understand. I've boolean-subtracted spheres, cubic figures, and (lathed) objects with round surfaces from each other before, and I don't always get the error message. In fact, to create a cresent-looking hemisphere, I subtracted a smaller circle from a bigger one, and it worked; amoung the random times it mysteriously does.

The reason I revived this thread is because, as I've consistently ran into in the past, I ran into this error message again when  trying to subtract a "screw" object from my Cannon chess piece; this, to create the cannon's main body component with a hole drilled through it. Whether it's B-A or A-B, I still get this "error 3" message.

http://www.filedropper.com/transfiguringcannonandscholarintofidechesspieces (change to front view, if not already there)
« Last Edit: December 10, 2015, 11:15:32 pm by JSmith_DumDumDumDumDum »
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NickE

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Re: Boolean operation problem!
« Reply #14 on: December 11, 2015, 10:45:10 pm »

I have attached a different Boolean Operations script that might work in those tricky situations.  The instructions are a bit different, so be sure to read the header in the script file.

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